Yarn and filament twisting device



June 15, 1937. cs. D. MAJOR 2,033,724

YARN AND FILAMENT TWISTING DEVICE Filed Sept. 14, 1934 2 Sheets-Sheet 1 I I I v 4 I INVENTOR. ,5 5 George Dewe Major W ATTORNEYS June 15, 1937. a. D. MAJOR YARN AND FILAMENT IWISTING DEVICE Filed Sept. 14, 1934 2 Sheets-Sheet 2 I INVENTOR. George Dewea Major BY v w Patented June 15, 1937 UNITED STATES 2,083,724 YARN AND FILAMENT TWISTING DEVIC George Dewey Major, Cumberland, Md., assig-nor to Celanese Corporati tion of Delaware on of America, a corpora- Application September 14, 1934, Serial No. 743,962

6 Claims.

This invention relates to a device by means of which a bundle of filaments can be fed onto a rotating object such as a cone, spool or tube, from a source of supply which may consist of any suitable yarn package, or filament spinning chamber, without stopping the rotating member in order to start winding operation and more particularly to a new form of automatic threading ring and/or fiyer type twisting device.

An object of the invention is the construction 10 of a simple yet efficient device for imparting twist to yarn that can be threaded in so short a time that the revolving element or take-up package and/or the feed of yarn need not be stopped,

15 thus producing a uniformly twisted yarn even at the starting of a new package. Another object of the invention is an economic and expeditious method of imparting twist to yarns or bundles of filaments, Other objects of the invention will appear from the following detailed description and drawings.

In the drawings wherein like reference numerals refer to like or similar elements in the various figures: 25 Fig. 1 is aperspective view of --a ring and a modified type of traveller or flyer in position about a take-up spool.

Fig. 2 is a plan view partly in section of the ring and modified type of traveller or fiyer.

80 Fig. 3 is a side elevation partly in section of a part of the ring and traveller or flyer taken on the'line 33 of Fig. 2.

Fig. 4 is a perspective view of an automatic traveller threading device with the ring and a traveller in position with respect to a take-up spool.

Fig. 5 is a planview o ring and traveller.-

Fig. 6 is a side elevation partly in section of an automatic threading ring and traveller taken on the line 6-6 of Fig. 5.

Fig. '7 is an enlarged plan view partly insection of a part of the automatic traveller thread ing device and the ring holding same.

It is customary in ring spinning, by means of fiyers, travellers or other devices, to remove the rotating object and thread up the bundle of filaments, forming the yarn to be twisted or the twisted yarn, through the ring, fiyer or traveller, then gradually start rotation. This causes waste and delay. In addition, because of this, it is not possible except at very slow speeds to feed forward a continuous thread and start up the unit. The rate of forward feed of the filament bundle is too great for the length of time taken to thread up the unit, or if the rate of feed is cut down to the point where it can be threaded up, the production rate is too slow.

i an automatic threading By my invention these dimculties are removed so in that a bundle of filaments or fibres may be fed rotating object and have twist inserted the bundle is fed forward con the twisted bundle, stopping onto a in the bundle while tinuously and the winding of on the take-up spool, is started without said take-up spool.

According to my invention then I insert twist to abundle of fibres or filaments and wind the twisted bundle or yarn upon a take-up package by a ring and traveller method of spinning while employing an automatic or quickly threaded traveller such that the take-up package need not be stopped. This is attained in one way by the mechanisms shown in t e drawings and form ing a part of this invention.

This invention is applicable to the imparting of twist of any degree from less than one turn per inch to many turns per inch in a bundle of fibres or filaments that may be parallel and untwisted or that may have had a twist imparted thereto. Further the filaments may be drawn or fed from any suitable type of package for example a spool, Topham box, cone, cross-wound cheese, etc., or in operating upon artificial filaments as they are drawn from the place where they are formed, for example a spinning cabinet, either by the dry or wet spinning method.

By the term bundleof filaments is meant yarns or filaments under which terms are included threads, assemblies or bundles of a number of continuous filaments which may be. in parallel relationship or which may be twisted together, artificial straws, short lengths of staple fibres, natural fibres or yarn spun from such staple fibres. 1

Althoughv this invention is particularly applicable to the imparting of twist to bundles of filaments that are substantially continuous such as those formed of artificial material it is also applicable to sp'un yarns of wool, cotton and other fibre lengths. This invention is applicable to both the twisting of single yarns or to the doubling of yarns of any number of feeds.

With particular reference to Figs. 1, 2 and 3 there is shown a steel ring I in general shape a standard type of spinning ring as used on doubling frames. These rings I are adapted for bolting onto the channel section of a traversing mechanism by means of the two holes 2 for receiving bolts in the normal manner. The ring is formed with a slot 3 extending through the same and a smooth, polished guiding lip l at the entrance to the slot. The slots and lip I may be cast with the ring I or cut and shaped onto a formed ring. The slot 3 is preferably at an angle to the radius of the ring and inclined in the direction of travel of the bundle of filaments about the ring.

The ring I is also formed with a T shape crosssection as shown in Fig. 3. The flange acting as a supporting attaching and strengthening means while the flanges 6 and I act as a track or guide. In the flange 6'I there is milled or otherwise formed a groove or track 8, preferably polished to reduce friction, in which is inserted a solid ring 9 of steel or other metal. The ring 9 is so shaped and sized relative to the ring I and its groove 8 to be free to float in the annular EI'OOVG.

In operation the ring I is held stationary or reciprocated along the length of a take-up package, shown on the drawings as a spool Ill. The spool I0 is adapted to ride and be rotated by a spindle or other suitable means. To start a new package or repair a failure in thread etc. of a partially formed package, the end of the thread 2| is placed in the notch or caused to catch in the notch 20 as it rotates past the operator. The drag on the winding thread pullsthe same into the slot 3 guided by the lip 4. Thus when the bundle of filaments are collected together from the feeding device, they are thrown on to the rotating spool through the slot and twist is inserted in the bundle, from the very beginning, because of the dragging action on the bundle of filaments by the ring 9 and the different relative velocities of the take-up package and the feeding device.

In Figs. 4 is shown amodifled form of device that allows for automatic or quick threading yet embodying all the advantages of a ring and traveller type of twisting device. A steel or other suitable metal ring I in general shape astandard type of spinning or twisting ring as used on doubling frames, is adapted for bolting onto the channel sections of a traversing mechanism by means of the two holes 2' for receiving bolts in the normal manner. The ring is formed with a slot 3 extending through the same and a smooth, polished guiding lip 4 at the entrance to the slot. The slot 3 and lip I may be cast with the ring or cut and shaped onto a formed ring. The slot 3 is preferably at an angle to the radius of the ring and slanting toward the direction of travel of the traveller.

The ring is also formed with a T-shape crosssection as shown in Fig. 6. The flange 5 acting as a supporting, attaching and strengthening means while the flanges 6 and I act as a track or guide for a traveller II. In the flange 8-1 there is milled or otherwise formed a groove I2 extending substantially around the ring except for the thread releasing guide section I3. The groove or track I! is preferably polished to reduce friction of the thread passing along the same. Extending in and substantially the length of the groove I2 is a polished metal rod or wire I4 suitably fastened to the ring I5. The rod I4 has a free end I6 and is formed to have a slight clearance from the releasing guide I3. The rodpreierably is formed of a spring material.

Adapted to travel on the tracks and 'I in the usual-manner is a traveller II having truck engaging arms I1 and I8. The traveller may be bent or cut to shape from a strip of metal, composition, wood or. other suitable material upon the face of which is a hook-shaped thread en- "gaging member l9 or the same may be termed an eye.

In operation the bundle of filaments 2| is hooked in theslot 20 of the spool l0 and the bundle fed through the slot 3 where they. pass between the spring rod 9 and the annular groove 8. As the bundle of filaments is carried round the annular groove, it picks up the traveller II, the bundle falling behind the hook I 9. The

bundle of filaments are then carried free of the loose end of the spring rod or wire and continue to feed onto the rotating spool I0 inserting twist in the normal manner by means of the traveller I I through which the bundle continues to pass.

It is to be understood that the foregoing detailed description and drawings are merely given by way of illustration and many alterations may be made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. In a device for imparting twist to a bundle of filaments the combination with means for feeding a bundle of filaments and means for taking up a bundle of filaments. of a ring having a slot therein and an annular groove extending partly around said ring, a traveller adapted to travel on said ring and cause a drag on the bundle of filaments and an annular rod in said groove crossing said slot and having a free end for threading said traveller.

I 2. In a device for imparting twist to a bundle of filaments, the combination with means for feeding .a bundle of filaments and means for taking up a bundle of filaments, of a ring having an inclined slot therein and an annular groove extending partly around said ring, a traveller adapted to travel on said ring and cause a drag on the bundle of filaments and an annular rod in said groove crossing said inclined slot and having a free end for threading said traveller.

3. In a device for imparting twist to a bundle of filaments the combination with means for feeding a bundle of filaments and means for taking up a bundle of filaments, of a ring having a slot therein and an annular groove extending partly around said ring, a traveller adapted to travel on said ring and cause a drag on the bundle of filaments, a lip for guiding filaments into said slot, and an annular spring rod in said groove crossing said slot and having a free end for automatically threading said traveller from the outside of said ring.

4. In a device for imparting twist to a bundle of filaments, the combination with means for feeding a bundle of filaments and means for taking up a bundle of filaments, of a ring having an inclined slot therein and an annular groove extending partly around said ring, a traveller adapted to travel on said ring and cause a drag on the bundle of filaments, a lip for guiding filaments into said inclined slot, and an annular spring rod in said groove crossing said inclined slot and having a free end for automatically threading said traveller from the outside of said ring.

5.' In a device for imparting twist to a bundle of filaments, the combination of a ring, a traveller adapted to travel on said ring and cause a drag on the bundle of filaments, said ring being provided with a slot and an annular groove extending partially around said ring, and an annular rod in said groove crossing said slot and having a free end forthreading said traveller.

clined slot and having a free end for threading said traveller.

GEORGE D. MAJOR. 

